So I got my 91 xj running , its 4x4 4.0 with a auto trans , fresh motor and trans was gone through... started it up and ran it to pump fluid through the trans and I would say I got a good 6 to 7 quarts in the trans now.... when I shift it to drive or rev , or 1&2 and 3 it does nothing. When I put it back in park it makes a very light grinding noise then shifts ,but in park the truck will still roll free...... any suggestions